31/08/2026
Quantum computers will not instantly break every password in seconds, despite common myths about next-generation computing power.
While quantum processors are exceptionally fast at solving specific mathematical formulas, most passwords today are protected by cryptographic hashing algorithms like SHA-256 and Argon2. A quantum computer running Grover’s algorithm only provides a moderate speedup against these systems, meaning properly hashed, complex passwords would still take billions of years to brute-force.
The real challenge lies in public-key encryption used for secure web connections and digital signatures. Global cybersecurity frameworks are already transitioning to post-quantum cryptography to keep digital infrastructure secure long before fault-tolerant quantum machines become widely accessible.